diff --git a/src/test/run-pass/lib-int.rs b/src/test/run-pass/lib-int.rs
index 2e85abf6509f..9fd127ef6fbf 100644
--- a/src/test/run-pass/lib-int.rs
+++ b/src/test/run-pass/lib-int.rs
@@ -1,3 +1,4 @@
+// xfail-stage0
 use std;
 
 import std._int;
diff --git a/src/test/run-pass/lib-uint.rs b/src/test/run-pass/lib-uint.rs
index 356ca374092c..98d3755016bc 100644
--- a/src/test/run-pass/lib-uint.rs
+++ b/src/test/run-pass/lib-uint.rs
@@ -1,3 +1,4 @@
+// xfail-stage0
 // -*- rust -*-
 
 use std;